Dhorcas Quartz Clock Movement Kit for Replacement, 3/16" Threaded Motor and Long 6" Hands FAST SHIPPING... get it in 2-4 business days Threaded shaft length: 5mm / 3/16in. Quiet, Travel Time Accurate, Precise Degree is High Total shaft length: 13mm / 1/2in. Motor size: 2 2/16" x 2 2/16" x 5/8"